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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2172000833> ?p ?o ?g. }

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• W2172000833 abstract "To develop a practical motor imagery-based brain-controlled switch as functional as a real-world switch that is reliable with a minimal false positive operation rate and convenient for users without the need of attention to the switch during a 'No Control' state (when not to activate the switch).Four healthy volunteers were instructed to perform an intended motor imagery task following an external sync signal in order to turn on a virtual switch provided on a computer screen. No specific mental task was required during the 'No Control' state. The beta band event-related frequency power (event-related desynchronization or ERD) from a single EEG Laplacian channel was monitored online in real-time. The computer continuously monitored the relative ERD power level until it exceeded a pre-set threshold and turned on the virtual switch.Subject 1 achieved lowest average false positive rate of 0.4+/-0.9% in a five-session online study during the entire 'No Control' state, whereby the subject required 6.8+/-0.6 s of active urging time or total response time of 20.5+/-1.9 s to perform repeated attempts in order to turn on the switch in the online interactive switch operation. The average false positive rate among four subjects was 0.8+/-0.4% with average active urging time of 12.3+/-4.4 s or average response time of 36.9+/-13.0 s. Offline analysis from subject 2 shows that the overall performance from 10-fold cross-validation was 96.2% with 3 consecutive epoch averaging, which was further improved to 99.0% by computationally intensive methods.The novel design of the brain-controlled switch using the ERD feature associated with motor imagery achieved minimal false positive rate with a reasonable active urging time or response time to activate the switch.The reliability and convenience of the developed brain-controlled switch may extend current brain-computer interface capacities in practical communication and control applications." @default.
• W2172000833 created "2016-06-24" @default.
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• W2172000833 date "2010-08-01" @default.
• W2172000833 modified "2023-09-27" @default.
• W2172000833 title "A motor imagery-based online interactive brain-controlled switch: Paradigm development and preliminary test" @default.
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• W2172000833 doi "https://doi.org/10.1016/j.clinph.2010.03.001" @default.
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